While I know this isn't exactly for bettas, Lucky, my oto is currently in the betta tankk and I am leaving tomorrow, and therefore I'd like to know what's up before I leave for so long.

Housing
What size is your tank? 10 gallon
What temperature is your tank? currently 76. Goes up to about 80
Does your tank have a filter? yes
Does your tank have an air stone or other type of aeration? no
Is your tank heated? no
What tank mates does your betta fish live with? The oto lives with 2 bettas

Food
What type of food do you feed your betta fish? The bettas get a variety of foods. The oto feeds off of whats in the tank. She doesn't get any other foods (if anyone can suggest food that'd be great)
How often do you feed your betta fish? everyday for the bettas. Oto is on her own

Maintenance
How often do you perform a water change? Once a week
What percentage of the water do you change when you perform a water change? 50-75%
What type of additives do you add to the water when you perform a water change? Water conditioner/stress coat

Water Parameters:
Have you tested your water? If so, what are the following parameters?

Symptoms and Treatment
How has your betta fish's appearance changed? I've seen no change in Lucky's appearance. Her normal appearance is a dark brown body with a thick black stripe. Her underside is pale, and her mouth is browner than her underside. I've shined the flashlight on her and saw no difference.
How has your betta fish's behavior changed? My oto has been swimming around her side of the tank like crazy. She rarely sticks to the side of anything anymore. Before she was on the gravel but she wasn't sucking on it, her mouth was actually not extended in anyway. When she sticks to the side of the tank, she struggles and slides down.
When did you start noticing the symptoms? Yesterday when she didn't stop swimming. Luckily Squirt didn't bother, but I could tell it was making him anxious because she kept swimming in front of him.
Have you started treating your fish? If so, how? I moved her over to Banana's side since there seemed to be more algae on the decor than the other side and I thought that her swimming around was because she couldn't find food, but she kept doing the whole thing again. When she did land on the decor, she fell off.
Does your fish have any history of being ill? No
How old is your fish (approximately)? I've had her for a full month, and she was not full grown when I got her. So maybe a few months old

**Yes, I know that otos do well in groups, but considering I'm going to be putting 4 bettas in the 10 gallon with the oto, I think the bioload will be too great with more. PLUS, I know how fragile they are and I'm afraid that something will go wrong if I get more than one and put them in a small section of the tank. The whole month I've had Lucky, she has never experienced any sort of negative symptoms.**

Oto's are very specialized in what they feed on, algae and lots of it. I have set up algae farms in a spare tank, just to grow algae on flat smooth stones, and pieces of driftwood.While cucumber is tasty, it is not nutrient dense, try slightly blanched spinach, or spirulina wafers.

Not long, week or so. use a tub or whatever, mix a 1/4 tsp miraclegro plant food to 1 gal water, add a lot of light, the longer the photo period the better.The algae will grow on the stones that you add. You can also scrape it off of the sides and feed it to them that way. You wont need a heater or a filter. Sadly oto's often fail because they need a fully established, stable, planted tank,with Lots of algae and 5 or more of their own kind.

Unfortunately, I can't do that. I'm in a college and 10 gallons is the max.

Lucky has been with me for a month. If anything had happened before hand I would have returned her, but unfortuantely its way past the return date, and I'm not returning her. This is a minor bump in the road, but I'm hoping to hve it fixed.